KUALA LUMPUR, Malaysia — While possible clues about the fate of a Malaysia Airlines jet missing for more than two weeks keep coming from satellite images, it was as frustrating as ever Saturday to turn the hints from space into actual sightings.

China released a satellite image showing an object floating in a remote stretch of the southern Indian Ocean near where planes and ships have been crisscrossing since similar images from an Australian satellite emerged earlier in the week. China’s image, showing an object that appeared to be 72 feet by 43 feet, was taken around noon Tuesday.

“The news that I just received is that the Chinese ambassador received a satellite image of a floating object in the southern corridor and they will be sending ships to verify,” Malaysian Defense Minister Hishammuddin Hussein told reporters.

Australian officials said the location was within the 14,000-square-mile area they searched on Saturday, but the object was not found. Australian Maritime Safety Authority spokeswoman Andrea Hayward-Maher said she did not know whether the precise coordinates of the location had been searched, but added that coordinators will use the information to refine the search area.

The authority, which is overseeing the search in the region, said a civil aircraft reported seeing a number of small objects in the search area, including a wooden pallet, but a New Zealand military plane diverted to the location found only clumps of seaweed. The agency said in a statement that searchers would keep trying to determine whether the objects are related to the lost plane.

The latest satellite image is another clue in the baffling search for Malaysia Airlines Flight 370, which dropped off air traffic control screens March 8 over the Gulf of Thailand with 239 people on board.

After about a week of confusion, Malaysian authorities said pings sent by the Boeing 777-200 for several hours after it disappeared indicated that the plane ended up in one of two huge arcs: a northern corridor stretching from Malaysia to Central Asia, or a southern corridor that stretches toward Antarctica.

The discovery of two objects by the Australian satellite led several countries to send planes and ships to a stretch of the Indian Ocean about 1,550 miles southwest of Australia. But three days of searching have produced no confirmed signs of the plane.

One of the objects spotted in the earlier satellite imagery was described as 80 feet in length and the other was 15 feet.

The Boeing 777-200 is about 209 feet long with a wingspan of 199 feet, and a fuselage about 20 feet in diameter, according to Boeing’s website.

In a statement on its website announcing China’s find, the State Administration of Science, Technology and Industry for National Defense did not explain why it took four days to release the information. But there was a similar delay in the release of the Australian satellite images because experts needed time to examine them.

Two military planes from China arrived Saturday in Perth to join Australian, New Zealand and U.S. aircraft in the search. Japanese planes will arrive Sunday and ships were in the area or on their way.

Erik van Sebille, an oceanographer at the University of New South Wales in Sydney, said the currents in the area typically move at about one meter (yard) per second but can sometimes move faster.

Based on the typical speed, a current could theoretically move a floating object about 107 miles in two days.

But even if both satellites detected the same object, it may be unrelated to the plane. One possibility is that it could have fallen off a cargo vessel.

Warren Truss, Australia’s acting prime minister while Tony Abbott is abroad, said before the new satellite data was announced that a complete search could take a long time.

“It is a very remote area, but we intend to continue the search until we’re absolutely satisfied that further searching would be futile — and that day is not in sight,” he said.

“If there’s something there to be found, I’m confident that this search effort will locate it,” Truss said from the base near Perth that is serving as a staging area for search aircraft.

Aircraft involved in the search include two ultra-long-range commercial jets and four P3 Orions, the maritime safety authority said.

Because the search area is a four-hour flight from land, the Orions can search for about only two hours before they must fly back. The commercial jets can stay for five hours before heading back to the base.

Two merchant ships were in the area, and the HMAS Success, a navy supply ship, had also joined the search.

Hishammuddin, the Malaysian defense minister, said conditions in the southern corridor were challenging.